CAMBRIDGE, Mass., April 30 /PRNewswire/ -- Merrimack Pharmaceuticals' MM-111 Team Leader Charlotte McDonagh, Ph.D., will discuss the development of this novel, bispecific antibody on Tuesday, May 4, at the BIO 2010 International Convention in Chicago, Illinois.

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.